论文部分内容阅读
采用UDEC模拟了巷宽对山西磁窑沟煤矿10106输送带巷围岩稳定的影响,结果表明:顶、底塑性区呈“拱形”分布,两帮呈“三角形”分布。塑性区深度顶板>两帮>底板;塑性区深度增加迅速:两帮>顶板>底板;围岩表面变形:顶板>两帮>底板,表面变形增加量:顶板>两帮>底板。认为:两帮上部为第一控制关键部位,顶板为第二控制关键部位,两帮和顶板锚杆索空间应力骨架结构互相促进围岩稳定。基于此采用高强高预紧力锚杆索支护技术。
UDEC was used to simulate the effect of width on the surrounding rock stability of 10106 belt conveyor in Shanxi Ciyugou Coal Mine. The results show that the top and bottom plastic zones are distributed in an “arch” shape and the two are distributed in a “triangle” shape. Plastic zone depth of the roof> two gangs> floor; plastic zone depth increases rapidly: two gangs> roof> floor; rock surface deformation: roof> two gangs> floor, surface deformation increase: roof> two gangs> floor. It is considered that the upper part of the two gangs are the key part of the first control and the top part is the key part of the second control. The space stress skeleton structure of the two gangs and the roof anchor rod mutually promote the stability of the surrounding rock. Based on this use of high strength and preload force of rock bolt support technology.